Icpiper, this was with my .357 Ruger revolver. I have made a couple of safety mistakes (this being one of them), and I was really mad at myself. One of the safety things I did was count, and it was unnerving that that didn't work (I must lose count when I'm thinking about the target, or recoil, or something). From now on I will either fire at the target if I'm not sure, or open and check the revolver.
I did something dumb with my .45 semi yesterday -- it was on my hip, and I sat down in the dirt to videotape a woodpecker, and forgot the gun and got dirt in it!
Well, at least that gave me another reason to practice field-stripping...